Joseph h



l. H. POPE.

JACK.

APPLICATION FILED FEB. 2. 19:6.

1 ,3 1 3, 909. Patented Aug. 26, 1919.

@NITE TATES PATENT llFlQlr.

JOSEPH I-I. POPE, 0F HAMILTON, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO UNITED SHOE MACHINERY CORPORATION,

PORATION OF NEW JERSEY.

OF PATERSON, NEW JERSEY, A COR- JACK.

Patented Aug. 26, 191i).

Application filed February 2, 1916. Serial No. 75,800.

To all whom t may concern:

Be it known that I, Josnrrr II. Pore, a citizen of the United States, residing at Hamilton, in the county of Essex and State of Massachusetts, have invented certain Improvements in Jacks, of whi 'h the following description, in connection with the accompanyingdrawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to jacks for supporting boots or shoes in shoe machinery such, for example, as heel nailing machines.

In positioning lasted shoes properly to be operated upon the ad `ustment of the shoe in respect to its angular position requires frequent changes in the angle of each last supporting part of the jack.

The object of the present invention is to provide an improved jack arranged to facilitate the making of the desired adjustments by the operator and to maintain securely an adjustment, once made, even though the parts of the jack may be subjected to heavy pressure during the operation upon the work. When a jack is con structed in accordance with my invention, these advantages are attained without the necessity of making the jack parts heavy or cumbersome, and the operator is, by reason of the ease with which the jack is manipulated, able to maintain a higher rate production by the machine, with less tax on his strength and attention than when jacks of the types heretofore known are used. In the illustrated embodiment of the invention the last bed piece, by which the last is directly supported, is mounted to swing about an axis outside the last and a rigid arm extending from the bed piece is arranged to be locked at a point remote from the said axis, thus securing the benefit of a powerful leverage to maintain the bed piece securely even against heavy pressure tending to displace it.

The locking means referred to Inay conveniently be used for purposes of adjustment by gearing, or similarly connecting it to an adjusting member arranged to be locked to, or unlocked from, the ack post and, preferably, as in the illustrated embodiment of the invention, the adjusting member may be so constructed and arranged that either a limited movement with respect to the jack member may be locked to the jack post in any one of several adjusted positions; thus meet-ing the frequently occurring condition that certain ones of a lot of supposedly uniform lasts have become somewhat worn or broken down in use.

These and other features of the invention will be best understood and appreciated from the 'following description of a preferred embodiment thereof selected for purposes of illustration and shown in the accompanying drawings, in which- Figure 1 is a view in side4 elevation of the jack showing also the die plate of a heel attaching machine with a heel in position to be attached Fig. 2 is a view in side elevation of portions of the jack, showing the post in section;

Figs. 3 and 4 are detail views of the locking mechanism, and

Fig. 5 is a view, partly in section, of the locking mechanism as assembled in the jack.

The base 13 of the jack has a vertical socket, to receive. the adjustable jack post 16. the latter being threaded at its lower end and supported on the base by a largchandnut 1st. The upper end of the post is provided with horizontal bearings for the trunnions 22 of the last bed piece. The bed piece is therefore supported so that it can be turned or rocked in the longitudinal plane of a shoel supported thereon. When the jack is used in a heel attaching machine this adjusting movement is required to bring the sole o the shoe into parallel relation with the face of the heel which is to be attached to it. As shown in Fig. 1, the heel is held in position by holding arms 10 beneath the die plate 8 having nail receiving passages for the attaching nails.

The last bed piece is made in two parts of which the upper section '2l carries the last pin and is mounted to slide horizontally in transverse .undercut ways formed in the lower section 23. From the lower section of the last bed piece an arm 1S extends downwardly and is provided at its lower end with an inwardly extending end Q0 whiclrpasses through a slot or opening in the last post 1G. On its upper surface the end Q0 of the arm is provided with rack teeth which are arranged to mesh with a pinion 32 'fast upon a shaft 26 journaled in bearings in the post 16.

At one end the shaft 26 extends into a boss on the post 16 and is provided with a washer 28 between which and the body of the post is disposed aV compression spring 30 acting normally to hold the shaft 26 in its right hand position 32 is in mesh with the toothed end 20 ofthe arm 18 of the bed piece. At its other end the shaft 26 is provided with a hand wheel 36 and it will be apparent that by'turning the wheel 36 the arrn 18 will be oscillated and the angular position of the bed piece correspondingly changed.

Adjacent to the hand wheel 36 the post 16 is bored out and supplied with a cylindrical filling plug 34 which is rigidly held in place by a set screw and a cylindrical key 44, and is lprovided with a recess 35 to receive the pinion 32 whenV the latter is movedV out of mesh with the rack 20, as will be described hereinafter. A pin 42 projects from the face of the plug 34 and is adapted to enter one ofa series of sockets 40 or a long curved slot 38 formed in the inner face or' the hub of the hand Wheel 36. It will beV seen that when the pin 42 enters one of the sockets 40 the hand wheel is locked rigidly against rotation and consequently the angle of the last bed piece is rigidly maintained. When it is desired to adjust the position of the bed piece the hand wheel 36 is pulled outwardly compressing the spring 30 and carrying the inner surface of its hub out of engagement with the end of the pin 42 whereupon the wheel 36 may be turned to bring another socket opposite the pin 42. In case it is desired to arrange the last bed piece for free angular movement the hand wheel 36 is pulled outwardly and turned suiciently to enter the pin 42 in the curved slot 38 whereupon a limited rotary movement of the hand wheel is permitted.

When the hand wheel 36 is pulled outwardly to disengage the pin 42the pinion 32 is moved into the recess 35 out of mesh with the toothed end 2O of the arm 18, so that in turning the hand wheel to locate either the sockets 40 or the curved slot 38 in operative relation with the pin 42 no movement is imparted to the arm 18 and the last bed piece. It will thus be seen that the last bed piece may be locked in any desired angular position or may be limited to a predetermined angular movement from any initial position.

While the jack of my invention has been described in connection with a heel attaching machine it may be used to good advantage in any machine wherein it is desired to position accurately la shoe with respect to its longitudinal inclination.

aving thus described my invention, I claim as new and desire to secure by Letters jatent ef the. United States:

l. .A jack eemprisng e post, e last bed (F ig. 5) in which the pinion piece mounted to swing thereon about an axis outside the last, an arm extending rigidly from the bedV piece, and locking means constructed and arranged to act upon the arm at a point remote from the axis of the bed piece.

2. A jack comprising a post, a last bed piece mounted upon the top of the post to swing about an axis below the last and having transversely into an opening in the post, and locking means constructed and arranged to act upon the arm within said opening.

3. A jack comprising a post having a last bed piece pivoted upon an axis outside the an arm extending downwardly and' last, an arm extending rigidly from the bed Y piece, and adjusting means constructed and arranged to act upon the arm ata point remote from the axis of the bed piece.

4. A jack comprising `a post having a movable last bed piece, an arm rigidly connected to the bed piece, and a gear meshing with the arm. at a point remote from ther axis of the bed piece constructed and arranged ,to be locked to the post or to be freely rotatable within predetermined limits.

5. A jack comprisinga post having a last bed piece pivoted upon its upper end to swing about an axis below the last, an arm extending downwardly from the bed piece and then inwardly through the post, a gear journaled within the post in mesh with the arm, and a hand turning the gear.,

6. A jack comprising a post having a movable last bed piece thereon", a hand wheel mounted on the post and constructed and arranged to be locked thereto or to have a turning movement Within predetermined limits, and connections formoving the bed piece in response to movement of the hand wheel.

7. A jack comprising a post having a movable last bed piece at its upper end, a hand wheel mounted on the post below its end, means for locking the hand wheel to the post, and connections between the bed piece and hand wheel for adjusting the bed piece.

8. A jack comprising a post having a pivoted last bed piece, a rigid arm extending from the bed piece, and an adjusting wheel arranged vto turn on an axis parallel to that of the bed piece and being in operative engagement with the arm.

9. A jack comprising a post having an angularly movableV last bed piece, andV a hand wheel yieldingly held in position on the post and connected to the bed piece, said wheel and post having a pin and slot connection for limiting the movement of the bed piece relatively to the post.

10. A isch; comprising a pest having e @ted bed piece therese., en angular erm wheel outsidethe post for Y extending downwardly from the last bed piece and inwardly through the post and having teeth Within, the post, a spring pressed shaft journaled in the post and carrying a gear meshing With the teeth of the arm, a hand Wheel mounted on the shaft and having a long curved slot and a series of sockets, and a pin on the post arranged to enter either the slot or one of the sockets.

11. A jack comprising a post, a movable last bed piece supported by the post, a

Copies of this patent may be obtained for ve toothed arm extending from the bed piece, and a looking device for the arm including a pinion normally meshing with the arm, said device being movable to disengage the arm and pinion and to permit said looking device Vto be moved into different looking positions.

In testimony whereof I have signed my name to this specification.

JOSEPH H. POPE.

cents each, by addressing the Commissioner of Patents,

Washington, D. C.

It is hereby certified that in Letters Patent No. 1,313,909, granted August 26, 1919, upon the application of Joseph H. Pope, of Hamilton, lvlassaehusetts, for an improvement in Jaeks, errors appear in the printed speeieation requiring correction as follows: Page 1, line 15, second (mem-renee, for the article the read each; same page, line 17, -l'or the Word eaeh read the, and line 1S, for the Word part read pa1'ts,an l that the said Letters Patent should be read with these corrections therein' that the same may conform to the record of the ease in the Patent OHiee.

Signed and sealed this 30th day of December, A. D., 1919.

[SEAL] M. Il.. COULSTON,

Acting Commissioner of Patents. Cl. l2--l2. 

